My daughter (the one in the green dirndl) has an "overweight" BMI, but she wears a size small. I'm considered "extremely obese". Could never get below "obese", even when I was long-distance running in the mountains and wore a size 8.

I now go by waist-to-height ratio and jean size. Have a pair of old jeans I want to squeeze into. I don't weigh myself, anymore, as it drove me nuts.